He wrote an article, then buffed it up through several drafts.

他写了一篇文章，然后数易其稿加以润饰。

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So it is common that a syllabus has to undergo several drafts before it is finally approved.

因此一个教学大纲在最后获得批准之前常常要经过多次修改。

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Obama usually edits and rewrites the drafts several times.

奥巴马通常会对出来的草稿再进行数次编辑改写。

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Several drafts have circulated and a text of the final law was not immediately available.

NPR: Libya Passes Ban On Gadhafi-Era Officials

She is currently working on adapting Posh into a feature film, with several drafts already completed.

BBC: Posh: Laura Wade's play gets political update for West End

With a letter you have the opportunity to work through several drafts and get to a point of confidence that it is the best it can be and is devoid of major errors before you send it out.

FORBES: Should I rehearse, and for how long? -Presentation Training